Without having to go to marple are Hollins suplies open
Depends...if you mean Hollins of Marple opposite Asda then I went past this evening whilst walking the dog and the note in the windows seemed to say that they are open (presumably because they have cleaning supplies) but they're operating reduced hours and operating social separation policies. Best give them a ring before you go up on 0161 449 8363.
If you mean Travis Perkins, which used to be Hollins Building Supplies (opposite the pool) then no...they're closed down. I'm posting this late in the evening of 24th March.